如何在 C# 中发出 HTTP 请求 [重复]

我如何在 Windows 中用 C# 发出卷曲请求或

我想使用此参数发出网络请求，它应该收到有效的响应

request

curl 'http://www1.bloomingdales.com/api/store/v2/stores/367,363,6113,364,4946?upcNumber=808593890516' -H 'Cookie:shippingCountry=US;' -H 'Accept-Encoding: gzip, deflate, sdch' -H 'User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/49.0.2623.108 Chrome/49.0.2623.108 Safari/537.36' -H 'Accept-Language: en-US,en;q=0.8' -H 'Accept: application/json, text/javascript, */*; q=0.01' --compressed

在 Perl 中我会简单地做

my $page = `curl --silent 'http://www1.bloomingdales.com/api/store/v2/stores/367,363,6113,364,4946?upcNumber=808593890516' -H 'Cookie:shippingCountry=US;' -H 'Accept-Encoding: gzip, deflate, sdch' -H 'User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/49.0.2623.108 Chrome/49.0.2623.108 Safari/537.36' -H 'Accept-Language: en-US,en;q=0.8' -H 'Accept: application/json, text/javascript, */*; q=0.01' --compressed 2>/dev/null`;

Then

my $page

结果存储在上面的变量中。

如何在c#中做类似的事情？？？

我强烈推荐使用新的Http客户端 https://msdn.microsoft.com/en-us/library/system.net.http.httpclient(v=vs.110).aspx.

请阅读本答案底部的注释

摘自 MSDN。

static async void Main()
{

    // Create a New HttpClient object.
    HttpClient client = new HttpClient();

    // Call asynchronous network methods in a try/catch block to handle exceptions
    try 
    {
       HttpResponseMessage response = await client.GetAsync("http://www.contoso.com/");
       response.EnsureSuccessStatusCode();
       string responseBody = await response.Content.ReadAsStringAsync();
       // Above three lines can be replaced with new helper method below
       // string responseBody = await client.GetStringAsync(uri);

       Console.WriteLine(responseBody);
    }  
    catch(HttpRequestException e)
    {
       Console.WriteLine("\nException Caught!");    
       Console.WriteLine("Message :{0} ",e.Message);
    }

    // Need to call dispose on the HttpClient object
    // when done using it, so the app doesn't leak resources
    client.Dispose(true);
 }

由于这个答案最初是写的，所以有一些关于使用 HttpClient 的注意事项。 （TLDR；它应该是单例）

按预期使用 HttpClient（因为你不是） https://www.codeproject.com/Articles/1194406/Using-HttpClient-As-It-Was-Intended-Because-You-re

在 WebAPI 客户端中每次调用创建新的 HttpClient 的开销是多少？ https://stackoverflow.com/questions/22560971/what-is-the-overhead-of-creating-a-new-httpclient-per-call-in-a-webapi-client

您错误地使用了 HTTPClient，它会破坏您的软件的稳定性 https://aspnetmonsters.com/2016/08/2016-08-27-httpclientwrong/